63B-M LOW WATER CUT-OFF - STEAM AND HOT WATER - W/ FLOAT BLOCK W/ MANUAL RESET Steam Trap • Dual precision switches for

• Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder

As an added measure of safety

Series 53/53-2

Series 247/247-2

Direct or reverse acting modes of operation

63B-M LOW WATER CUT-OFF - STEAM AND HOT WATER - W/ FLOAT BLOCK W/ MANUAL RESET Steam Trap • Dual precision switches forLow Water Cut Offs Mechanical For Steam and Hot Water Boilers Series 63 Low Water Cut Offs For residential, commercial, and industrial applications Heavy duty Includes No. 2 switch Optional manual reset available Maximum boiler pressure 50 psi (3. 5 kg cm2) Use with TC 4 on hot water systems McDonnell & Miller Series 63 Data Sheet